/* * AAC encoder wrapper * Copyright (c) 2012 Martin Storsjo * * This file is part of FFmpeg. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include "libavutil/channel_layout.h" #include "libavutil/common.h" #include "libavutil/intreadwrite.h" #include "libavutil/opt.h" #include "avcodec.h" #include "audio_frame_queue.h" #include "codec_internal.h" #include "encode.h" #include "profiles.h" #ifdef AACENCODER_LIB_VL0 #define FDKENC_VER_AT_LEAST(vl0, vl1) \ ((AACENCODER_LIB_VL0 > vl0) || \ (AACENCODER_LIB_VL0 == vl0 && AACENCODER_LIB_VL1 >= vl1)) #else #define FDKENC_VER_AT_LEAST(vl0, vl1) 0 #endif typedef struct AACContext { const AVClass *class; HANDLE_AACENCODER handle; int afterburner; int eld_sbr; int eld_v2; int signaling; int latm; int header_period; int vbr; int drc_profile; int drc_target_ref; int comp_profile; int comp_target_ref; int prog_ref; int metadata_mode; AACENC_MetaData metaDataSetup; int delay_sent; int frame_length; AudioFrameQueue afq; } AACContext; static const AVOption aac_enc_options[] = { { "afterburner", "Afterburner (improved quality)", offsetof(AACContext, afterburner), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "eld_sbr", "Enable SBR for ELD (for SBR in other configurations, use the -profile parameter)", offsetof(AACContext, eld_sbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 { "eld_v2", "Enable ELDv2 (LD-MPS extension for ELD stereo signals)", offsetof(AACContext, eld_v2), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, #endif { "signaling", "SBR/PS signaling style", offsetof(AACContext, signaling), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 2, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, { "default", "Choose signaling implicitly (explicit hierarchical by default, implicit if global header is disabled)", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, { "implicit", "Implicit backwards compatible signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, { "explicit_sbr", "Explicit SBR, implicit PS signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, { "explicit_hierarchical", "Explicit hierarchical signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" }, { "latm", "Output LATM/LOAS encapsulated data", offsetof(AACContext, latm), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "header_period", "StreamMuxConfig and PCE repetition period (in frames)", offsetof(AACContext, header_period), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xffff, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "vbr", "VBR mode (1-5)", offsetof(AACContext, vbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 5, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "drc_profile", "The desired compression profile for AAC DRC", offsetof(AACContext, drc_profile), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 256, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "drc_target_ref", "Expected target reference level at decoder side in dB (for clipping prevention/limiter)", offsetof(AACContext, drc_target_ref), AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "comp_profile", "The desired compression profile for AAC DRC", offsetof(AACContext, comp_profile), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 256, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "comp_target_ref", "Expected target reference level at decoder side in dB (for clipping prevention/limiter)", offsetof(AACContext, comp_target_ref), AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "prog_ref", "The program reference level or dialog level in dB", offsetof(AACContext, prog_ref), AV_OPT_TYPE_INT, { .i64 = 0.0 }, -31.75, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { "frame_length", "The desired frame length", offsetof(AACContext, frame_length), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1024, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, FF_AAC_PROFILE_OPTS { NULL } }; static const AVClass aac_enc_class = { .class_name = "libfdk_aac", .option = aac_enc_options, .version = LIBAVUTIL_VERSION_INT, }; static const char *aac_get_error(AACENC_ERROR err) { switch (err) { case AACENC_OK: return "No error"; case AACENC_INVALID_HANDLE: return "Invalid handle"; case AACENC_MEMORY_ERROR: return "Memory allocation error"; case AACENC_UNSUPPORTED_PARAMETER: return "Unsupported parameter"; case AACENC_INVALID_CONFIG: return "Invalid config"; case AACENC_INIT_ERROR: return "Initialization error"; case AACENC_INIT_AAC_ERROR: return "AAC library initialization error"; case AACENC_INIT_SBR_ERROR: return "SBR library initialization error"; case AACENC_INIT_TP_ERROR: return "Transport library initialization error"; case AACENC_INIT_META_ERROR: return "Metadata library initialization error"; case AACENC_ENCODE_ERROR: return "Encoding error"; case AACENC_ENCODE_EOF: return "End of file"; default: return "Unknown error"; } } static int aac_encode_close(AVCodecContext *avctx) { AACContext *s = avctx->priv_data; if (s->handle) aacEncClose(&s->handle); ff_af_queue_close(&s->afq); return 0; } static void aac_encode_flush(AVCodecContext *avctx) { AACContext *s = avctx->priv_data; AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 }; AACENC_InArgs in_args = { 0 }; AACENC_OutArgs out_args; int64_t pts, duration; uint8_t dummy_in[1], dummy_out[1]; int in_buffer_identifiers[] = { IN_AUDIO_DATA, IN_METADATA_SETUP }; int in_buffer_element_sizes[] = { 2, sizeof(AACENC_MetaData) }; int in_buffer_sizes[] = { 0, sizeof(s->metaDataSetup) }; int out_buffer_identifier = OUT_BITSTREAM_DATA; int out_buffer_size = sizeof(dummy_out), out_buffer_element_size = 1; void* inBuffer[] = { dummy_in, &s->metaDataSetup }; void *out_ptr = dummy_out; AACENC_ERROR err; ff_af_queue_remove(&s->afq, s->afq.frame_count, &pts, &duration); in_buf.bufs = (void **)inBuffer; in_buf.numBufs = s->metadata_mode == 0 ? 1 : 2; in_buf.bufferIdentifiers = in_buffer_identifiers; in_buf.bufSizes = in_buffer_sizes; in_buf.bufElSizes = in_buffer_element_sizes; out_buf.numBufs = 1; out_buf.bufs = &out_ptr; out_buf.bufferIdentifiers = &out_buffer_identifier; out_buf.bufSizes = &out_buffer_size; out_buf.bufElSizes = &out_buffer_element_size; err = aacEncEncode(s->handle, &in_buf, &out_buf, &in_args, &out_args); if (err != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unexpected error while flushing: %s\n", aac_get_error(err)); } } static av_cold int aac_encode_init(AVCodecContext *avctx) { AACContext *s = avctx->priv_data; int ret = AVERROR(EINVAL); AACENC_InfoStruct info = { 0 }; CHANNEL_MODE mode; AACENC_ERROR err; int aot = AV_PROFILE_AAC_LOW + 1; int sce = 0, cpe = 0; if ((err = aacEncOpen(&s->handle, 0, avctx->ch_layout.nb_channels)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to open the encoder: %s\n", aac_get_error(err)); goto error; } if (avctx->profile != AV_PROFILE_UNKNOWN) aot = avctx->profile + 1; if ((err = aacEncoder_SetParam(s->handle, AACENC_AOT, aot)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set the AOT %d: %s\n", aot, aac_get_error(err)); goto error; } if (aot == AV_PROFILE_AAC_ELD + 1 && s->eld_sbr) { if ((err = aacEncoder_SetParam(s->handle, AACENC_SBR_MODE, 1)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to enable SBR for ELD: %s\n", aac_get_error(err)); goto error; } } if (s->frame_length >= 0) { if ((err = aacEncoder_SetParam(s->handle, AACENC_GRANULE_LENGTH, s->frame_length)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set granule length: %s\n", aac_get_error(err)); goto error; } } if ((err = aacEncoder_SetParam(s->handle, AACENC_SAMPLERATE, avctx->sample_rate)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set the sample rate %d: %s\n", avctx->sample_rate, aac_get_error(err)); goto error; } switch (avctx->ch_layout.nb_channels) { case 1: mode = MODE_1; sce = 1; cpe = 0; break; case 2: #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 // (profile + 1) to map from profile range to AOT range if (aot == AV_PROFILE_AAC_ELD + 1 && s->eld_v2) { if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELMODE, 128)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to enable ELDv2: %s\n", aac_get_error(err)); goto error; } else { mode = MODE_212; sce = 1; cpe = 0; } } else #endif { mode = MODE_2; sce = 0; cpe = 1; } break; case 3: mode = MODE_1_2; sce = 1; cpe = 1; break; case 4: mode = MODE_1_2_1; sce = 2; cpe = 1; break; case 5: mode = MODE_1_2_2; sce = 1; cpe = 2; break; case 6: mode = MODE_1_2_2_1; sce = 2; cpe = 2; break; #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 case 7: mode = MODE_6_1; sce = 3; cpe = 2; break; #endif /* The version macro is introduced the same time as the 7.1 support, so this should suffice. */ #if FDKENC_VER_AT_LEAST(3, 4) // 3.4.12 case 8: sce = 2; cpe = 3; if (!av_channel_layout_compare(&avctx->ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_7POINT1)) { mode = MODE_7_1_REAR_SURROUND; #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 } else if (!av_channel_layout_compare(&avctx->ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_7POINT1_TOP_BACK)) { mode = MODE_7_1_TOP_FRONT; #endif } else { // MODE_1_2_2_2_1 and MODE_7_1_FRONT_CENTER use the same channel layout mode = MODE_7_1_FRONT_CENTER; } break; #endif default: av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels %d\n", avctx->ch_layout.nb_channels); goto error; } if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELMODE, mode)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set channel mode %d: %s\n", mode, aac_get_error(err)); goto error; } if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELORDER, 1)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set wav channel order %d: %s\n", mode, aac_get_error(err)); goto error; } if (avctx->flags & AV_CODEC_FLAG_QSCALE || s->vbr) { int mode = s->vbr ? s->vbr : avctx->global_quality; if (mode < 1 || mode > 5) { av_log(avctx, AV_LOG_WARNING, "VBR quality %d out of range, should be 1-5\n", mode); mode = av_clip(mode, 1, 5); } av_log(avctx, AV_LOG_WARNING, "Note, the VBR setting is unsupported and only works with " "some parameter combinations\n"); if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATEMODE, mode)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set the VBR bitrate mode %d: %s\n", mode, aac_get_error(err)); goto error; } } else { if (avctx->bit_rate <= 0) { if (avctx->profile == AV_PROFILE_AAC_HE_V2) { sce = 1; cpe = 0; } avctx->bit_rate = (96*sce + 128*cpe) * avctx->sample_rate / 44; if (avctx->profile == AV_PROFILE_AAC_HE || avctx->profile == AV_PROFILE_AAC_HE_V2 || avctx->profile == AV_PROFILE_MPEG2_AAC_HE || s->eld_sbr) avctx->bit_rate /= 2; } if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATE, avctx->bit_rate)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set the bitrate %"PRId64": %s\n", avctx->bit_rate, aac_get_error(err)); goto error; } } /* Choose bitstream format - if global header is requested, use * raw access units, otherwise use ADTS. */ if ((err = aacEncoder_SetParam(s->handle, AACENC_TRANSMUX, avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER ? TT_MP4_RAW : s->latm ? TT_MP4_LOAS : TT_MP4_ADTS)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set the transmux format: %s\n", aac_get_error(err)); goto error; } if (s->latm && s->header_period) { if ((err = aacEncoder_SetParam(s->handle, AACENC_HEADER_PERIOD, s->header_period)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set header period: %s\n", aac_get_error(err)); goto error; } } /* If no signaling mode is chosen, use explicit hierarchical signaling * if using mp4 mode (raw access units, with global header) and * implicit signaling if using ADTS. */ if (s->signaling < 0) s->signaling = avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER ? 2 : 0; if ((err = aacEncoder_SetParam(s->handle, AACENC_SIGNALING_MODE, s->signaling)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set signaling mode %d: %s\n", s->signaling, aac_get_error(err)); goto error; } if ((err = aacEncoder_SetParam(s->handle, AACENC_AFTERBURNER, s->afterburner)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set afterburner to %d: %s\n", s->afterburner, aac_get_error(err)); goto error; } if (avctx->cutoff > 0) { if (avctx->cutoff < (avctx->sample_rate + 255) >> 8 || avctx->cutoff > 20000) { av_log(avctx, AV_LOG_ERROR, "cutoff valid range is %d-20000\n", (avctx->sample_rate + 255) >> 8); goto error; } if ((err = aacEncoder_SetParam(s->handle, AACENC_BANDWIDTH, avctx->cutoff)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set the encoder bandwidth to %d: %s\n", avctx->cutoff, aac_get_error(err)); goto error; } } s->metadata_mode = 0; if (s->prog_ref) { s->metadata_mode = 1; s->metaDataSetup.prog_ref_level_present = 1; s->metaDataSetup.prog_ref_level = s->prog_ref << 16; } if (s->drc_profile) { s->metadata_mode = 1; s->metaDataSetup.drc_profile = s->drc_profile; s->metaDataSetup.drc_TargetRefLevel = s->drc_target_ref << 16; if (s->comp_profile) { /* Including the comp_profile means that we need to set the mode to ETSI */ s->metadata_mode = 2; s->metaDataSetup.comp_profile = s->comp_profile; s->metaDataSetup.comp_TargetRefLevel = s->comp_target_ref << 16; } } if ((err = aacEncoder_SetParam(s->handle, AACENC_METADATA_MODE, s->metadata_mode)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to set metadata mode to %d: %s\n", s->metadata_mode, aac_get_error(err)); goto error; } if ((err = aacEncEncode(s->handle, NULL, NULL, NULL, NULL)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to initialize the encoder: %s\n", aac_get_error(err)); return AVERROR(EINVAL); } if ((err = aacEncInfo(s->handle, &info)) != AACENC_OK) { av_log(avctx, AV_LOG_ERROR, "Unable to get encoder info: %s\n", aac_get_error(err)); goto error; } avctx->frame_size = info.frameLength; #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 avctx->initial_padding = info.nDelay; #else avctx->initial_padding = info.encoderDelay; #endif ff_af_queue_init(avctx, &s->afq); if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) { avctx->extradata_size = info.confSize; avctx->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); if (!avctx->extradata) { ret = AVERROR(ENOMEM); goto error; } memcpy(avctx->extradata, info.confBuf, info.confSize); } return 0; error: aac_encode_close(avctx); return ret; } static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr) { AACContext *s = avctx->priv_data; AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 }; AACENC_InArgs in_args = { 0 }; AACENC_OutArgs out_args = { 0 }; void* inBuffer[] = { 0, &s->metaDataSetup }; int in_buffer_identifiers[] = { IN_AUDIO_DATA, IN_METADATA_SETUP }; int in_buffer_element_sizes[] = { 2, sizeof(AACENC_MetaData) }; int in_buffer_sizes[] = { 0, sizeof(s->metaDataSetup) }; int out_buffer_identifier = OUT_BITSTREAM_DATA; int out_buffer_size, out_buffer_element_size; void *out_ptr; int ret, discard_padding; uint8_t dummy_buf[1]; AACENC_ERROR err; /* handle end-of-stream small frame and flushing */ if (!frame) { /* Must be a non-null pointer, even if it's a dummy. We could use * the address of anything else on the stack as well. */ inBuffer[0] = dummy_buf; in_args.numInSamples = -1; } else { inBuffer[0] = frame->data[0]; in_buffer_sizes[0] = 2 * avctx->ch_layout.nb_channels * frame->nb_samples; in_args.numInSamples = avctx->ch_layout.nb_channels * frame->nb_samples; /* add current frame to the queue */ if ((ret = ff_af_queue_add(&s->afq, frame)) < 0) return ret; } if (s->metadata_mode == 0) { in_buf.numBufs = 1; } else { in_buf.numBufs = 2; } in_buf.bufs = (void**)inBuffer; in_buf.bufferIdentifiers = in_buffer_identifiers; in_buf.bufSizes = in_buffer_sizes; in_buf.bufElSizes = in_buffer_element_sizes; /* The maximum packet size is 6144 bits aka 768 bytes per channel. */ ret = ff_alloc_packet(avctx, avpkt, FFMAX(8192, 768 * avctx->ch_layout.nb_channels)); if (ret < 0) return ret; out_ptr = avpkt->data; out_buffer_size = avpkt->size; out_buffer_element_size = 1; out_buf.numBufs = 1; out_buf.bufs = &out_ptr; out_buf.bufferIdentifiers = &out_buffer_identifier; out_buf.bufSizes = &out_buffer_size; out_buf.bufElSizes = &out_buffer_element_size; if ((err = aacEncEncode(s->handle, &in_buf, &out_buf, &in_args, &out_args)) != AACENC_OK) { if (!frame && err == AACENC_ENCODE_EOF) return 0; av_log(avctx, AV_LOG_ERROR, "Unable to encode frame: %s\n", aac_get_error(err)); return AVERROR(EINVAL); } if (!out_args.numOutBytes) return 0; /* Get the next frame pts & duration */ ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts, &avpkt->duration); discard_padding = avctx->frame_size - avpkt->duration; // Check if subtraction resulted in an overflow if ((discard_padding < avctx->frame_size) != (avpkt->duration > 0)) { av_log(avctx, AV_LOG_ERROR, "discard padding overflow\n"); return AVERROR(EINVAL); } if ((!s->delay_sent && avctx->initial_padding > 0) || discard_padding > 0) { uint8_t *side_data = av_packet_new_side_data(avpkt, AV_PKT_DATA_SKIP_SAMPLES, 10); if (!side_data) return AVERROR(ENOMEM); if (!s->delay_sent) { AV_WL32(side_data, avctx->initial_padding); s->delay_sent = 1; } AV_WL32(side_data + 4, discard_padding); } avpkt->size = out_args.numOutBytes; *got_packet_ptr = 1; return 0; } static const AVProfile profiles[] = { { AV_PROFILE_AAC_LOW, "LC" }, { AV_PROFILE_AAC_HE, "HE-AAC" }, { AV_PROFILE_AAC_HE_V2, "HE-AACv2" }, { AV_PROFILE_AAC_LD, "LD" }, { AV_PROFILE_AAC_ELD, "ELD" }, { AV_PROFILE_UNKNOWN }, }; static const FFCodecDefault aac_encode_defaults[] = { { "b", "0" }, { NULL } }; #if FF_API_OLD_CHANNEL_LAYOUT static const uint64_t aac_channel_layout[] = { AV_CH_LAYOUT_MONO, AV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_SURROUND, AV_CH_LAYOUT_4POINT0, AV_CH_LAYOUT_5POINT0_BACK, AV_CH_LAYOUT_5POINT1_BACK, #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 AV_CH_LAYOUT_6POINT1_BACK, #endif #if FDKENC_VER_AT_LEAST(3, 4) // 3.4.12 AV_CH_LAYOUT_7POINT1_WIDE_BACK, AV_CH_LAYOUT_7POINT1, #endif #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 AV_CH_LAYOUT_7POINT1_TOP_BACK, #endif 0, }; #endif /* FF_API_OLD_CHANNEL_LAYOUT */ static const AVChannelLayout aac_ch_layouts[16] = { AV_CHANNEL_LAYOUT_MONO, AV_CHANNEL_LAYOUT_STEREO, AV_CHANNEL_LAYOUT_SURROUND, AV_CHANNEL_LAYOUT_4POINT0, AV_CHANNEL_LAYOUT_5POINT0_BACK, AV_CHANNEL_LAYOUT_5POINT1_BACK, #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 AV_CHANNEL_LAYOUT_6POINT1_BACK, #endif #if FDKENC_VER_AT_LEAST(3, 4) // 3.4.12 AV_CHANNEL_LAYOUT_7POINT1_WIDE_BACK, AV_CHANNEL_LAYOUT_7POINT1, #endif #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0 AV_CHANNEL_LAYOUT_7POINT1_TOP_BACK, #endif { 0 }, }; static const int aac_sample_rates[] = { 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 0 }; const FFCodec ff_libfdk_aac_encoder = { .p.name = "libfdk_aac", CODEC_LONG_NAME("Fraunhofer FDK AAC"), .p.type = AVMEDIA_TYPE_AUDIO, .p.id = AV_CODEC_ID_AAC, .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_ENCODER_FLUSH | AV_CODEC_CAP_SMALL_LAST_FRAME, .caps_internal = FF_CODEC_CAP_NOT_INIT_THREADSAFE, .priv_data_size = sizeof(AACContext), .init = aac_encode_init, FF_CODEC_ENCODE_CB(aac_encode_frame), .flush = aac_encode_flush, .close = aac_encode_close, .p.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }, .p.priv_class = &aac_enc_class, .defaults = aac_encode_defaults, .p.profiles = profiles, .p.supported_samplerates = aac_sample_rates, .p.wrapper_name = "libfdk", CODEC_OLD_CHANNEL_LAYOUTS_ARRAY(aac_channel_layout) .p.ch_layouts = aac_ch_layouts, };